The Frisker - Radiation Alert - for First Responders

geiger counter


  • Handheld radiation survey meter.
  • Ideal for for first responders
  • At the ready wrist strap for quick frisking potentially hazardous objects
  • Halogen quenched GM tube
  • Detects Alpha, beta and gamma radiation
  • Adjustable Alert levels
  • Audible and visual alarms
  • Toggle scale to CPM µR/hr nSv/hr
  • Calibration Certificate
  • Wrist strap
  • Case Included

The Radiation Alert® Frisker is a radiation contamination instrument that has been designed to meet the demands of today’s radiation responder. By integrating the latest electronics with a proven and dependable Geiger-Mueller detector, we have created a rugged, ergonomic tool that addresses a number of radiological applications, but particularly those of first responders who need an instrument to hand that can quickly assess radiation hazards.


Halogen-quenched GM tube with thin mica end window. Mica window density 1.5-2.0 mg/cm2. Effective diameter of window is 45 mm (1.77 in.). Side wall is .012 inch thick.

Energy Sensitivity

Detects Alpha down to 2 MeV. Detects Beta down to .16 MeV; typical detection efficiency at 1 MeV is
approx. 25%. Detects Gamma down to 10 KeV through the detector window. 3600 CPM/mR/hr (137Cs). Smallest detectable level for 125I is .02 µCi at contact.

Operating Range

µR/hr - 1 to 50,000
CPM - 0.0 to 175,000
nSv/hr - 1 to 500,000
CPS - 0.0 to 2500


Readout will OVERRANGE in radiation fields as high as 100 times the maximum reading.


Pulsating beeper sounds the alert. Adjustable alert levels are used for µR/hr / CPM, and nSv/hr / CPS.  energy response Cs-137


Range µR/hr - 1 to 50,000
CPM - 0.0 to 175,000
nSv/hr - 1 to 500,000
CPS - 0.0 to 2500
Accuracy Typically ±15% from factory. , ±10% (NIST).
Display backlit liquid crystal display
Count light Red light flashes with each count
Audio Sounds each count
Temperature range 10° to +50°C (14° to 122°F)
Size 276 x 44 x 64 mm (10.88 x 1.75 x 2.5 in.)
Weight 217 g (7.7 oz.)
Power 2 AA alkaline batteries - ~200 hours run time

Accessories Price  
FR001 Radiation Alert Frisker complete with calibration certifcate, instructions and case $725.00